no hot water but heating ok

[AnonymousImport]

i replaced a rad in my bathroom as it is the last one on the system and a smaller rad i was fitting i had to drain the system i put the new rad on then bled off the all the rads

however when this was completed i discovered that the heating system was working but i had no hot water the system is an open system with a baxi boiler and a hot water tank what could be the problem??

 

[AnonymousImport]

this is classic air in the system problem.
as well as bleeding the radiators there,s a vertical pipe near the tank that needs bleeding.
if that doesn,t do it give the large scew in the middle of the pump body half a turn, air gets trapped there too.